<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <script>
        var fn = (function fum(){
            var num = 20;
            num ++;
            function foo(){
                return num;
            }
            return foo;
        })();
        console.log(fn());
        console.log(fn());

        var obj = (function createPerson(){
            var name = '姓名',age = 10;
            return {
                setName:function (newName){
                    name = newName;
                },
                getName:function(){
                    return name;
                }
            }
        })();
        obj.setName('刘德华');
        console.log(obj.getName());
        
    </script>
</body>
</html>